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A 1.05-A/m Minimum Magnetic Field Strength Single-Chip, Fully Integrated Biometric Smart Card SoC Achieving 792.5-ms Transaction Time With Anti-Spoofing Fingerprint Authentication Ji-Soo Chang , Eunsang Jang, Y oungkil Choi, Moonkyu Song, Sanghyo Lee, Gi-Jin Kang, Junho Kim, Uijong Song, Chang-Y eon Cho, Giyeong Ko, Hyunseok Hwang, Junseo Lee, Han-Sol Lee , Y ong-Il Kwon
开发了一种集成指纹传感器前端、高速处理器和安全元件的单芯片生物识别智能卡SoC。
792.5 ms总处理时间(包括防伪指纹认证)
生物识别智能卡指纹传感器SoC低磁场强度
▸创新点1:单芯片全集成生物识别智能卡系统(方法创新) - 该研究首次实现了将指纹传感器模拟前端、高速指纹信息处理专用处理器和双接口智能卡系统集成在单一芯片上,显著降低了系统复杂度和功耗,同时提高了安全性。
▸创新点2:电容式指纹传感器集成(电路创新) - 通过创新的电容式指纹传感器集成技术,实现了高精度的指纹采集和抗欺骗功能,同时保持了低功耗特性,适用于智能卡等资源受限场景。
▸创新点3:低磁场强度下工作(1.05 A/m)(系统创新) - 该系统在极低磁场强度(1.05 A/m)下仍能稳定工作,突破了传统智能卡的磁场强度限制,扩展了应用场景,同时总处理时间仅为792.5 ms。
▸创新点4:低成本单封装集成(工艺创新) - 采用创新的封装技术,将芯片与电容式指纹传感器及少量外部电容器集成在单一低成本封装内,显著降低了整体系统成本,同时保持了高性能和可靠性。
Abstract
A single-chip, fully integrated biometric authentica- tion smart card system-on-a-chip (SoC) has been developed that integrates an analog front-end for fingerprint sensors (FPSs), a high-speed processor dedicated to fingerprint information processing, and a dual-interface smart card system with a secure element. The chip is mounted on a cost-effective single package with a capacitive FPS and a few external capacitors. The implemented biometric smart card system shows a total processing time of 792.5 ms including anti-spoofing fingerprint authentication at a magnetic field strength of 1.05 A/m.